I won't be able to invest for another 5-7 years since my wife and I are working on paying off debt and saving up for a down payment on our own home here in Florida, but real estate really interests me so I am trying to learn as much as I can so that when we do decide to dive into it, hopefully there will be several things that I have a decent base in.

Side note: I couldn't fit this into each chart's description but I would like to say 1) Many of highest ranking counties based on rent/purchase price (1% (or 2%) rule) are false positives because there is not enough demand; these would be low population/ frontier counties.

I'm not sure about your market, but the housing authority sets the rent based on comps submitted here in Atlanta. 

Turo seems very difficult to do remotely based on the feedback I have received from a good friend that has copious amounts of transactions with Turo.

I based out of Houston, TX and been doing title research mostly using the county clerk site.

Lastly ,  Based on my experience . if you are hitting up 100 pips and maybe contacting 50 or 30 , maybe the approach and sales skills might need to be tune out..     

The opposite also holds true.As a REI, trying to judge if an area is a good area to buy as a rental, is and always will be based on the ability to CF. 

Yes, we've been getting a lot of requests to allow a full-out MLS/property search based on criteria.

I heard that the greater than 1 year holding is based on how long my parents held it, not based on how long I held it.

Ideally you have some sort of base to work with.